package com.bee.sample.ch3.controller;

import java.io.IOException;
import java.math.BigDecimal;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.bee.sample.ch3.entity.User;
import com.fasterxml.jackson.annotation.JsonAnyGetter;
import com.fasterxml.jackson.annotation.JsonAnySetter;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializerProvider;

@Controller
@RequestMapping("/jackson")
public class JacksonSampleController {
	
	Log log = LogFactory.getLog(JacksonSampleController.class);
	//参考JacksonConf
	@Autowired ObjectMapper mapper;
	
	@GetMapping("/now.json")
	public @ResponseBody Map now(){
		Map map = new HashMap();
		map.put("date", new Date());
		return map;
	}
	
	@GetMapping("/readtree.json")
	public @ResponseBody String readtree() throws JsonProcessingException, IOException{
		String json = "{\"name\":\"lijz\",\"id\":10}";
		JsonNode node = mapper.readTree(json);
		
		String name = node.get("name").asText();
		int id = node.get("id").asInt();
		return "name:"+name+",id:"+id;
		
	}
	
	
	@GetMapping("/databind.json")
	public @ResponseBody String databind() throws JsonProcessingException, IOException{
		String json = "{\"name\":\"lijz\",\"id\":10}";
		User user = mapper.readValue(json, User.class);
		return "name:"+user.getName()+",id:"+user.getId();
		
	}
	
	
	@GetMapping("/serialization.json")
	public @ResponseBody String custom() throws JsonProcessingException {

		User user = new User();
		user.setId(1l);
		user.setName("hello");
		String str = mapper.writeValueAsString(user);
		
		return str;
		
	}
	

	
@JsonIgnoreProperties ({"id","photo"})
	public static class SamplePojo{
		Long id;
		String name;
		byte[] photo;
		@JsonIgnore
		BigDecimal salary;
		Map<String , Object> otherProperties = new HashMap<String , Object>();
		public Long getId() {
			return id;
		}
		public void setId(Long id) {
			this.id = id;
		}
		public String getName() {
			return name;
		}
		public void setName(String name) {
			this.name = name;
		}
		public byte[] getPhoto() {
			return photo;
		}
		public void setPhoto(byte[] photo) {
			this.photo = photo;
		}
		public BigDecimal getSalary() {
			return salary;
		}
		public void setSalary(BigDecimal salary) {
			this.salary = salary;
		}
		@JsonAnyGetter
		public Map<String, Object> getOtherProperties() {
			return otherProperties;
		}
		 @JsonAnySetter
		public void setOtherProperties(Map<String, Object> otherProperties) {
			this.otherProperties = otherProperties;
		}
		 
	}


public static class Usererializer extends JsonSerializer<User> {  
    @Override  
    public void serialize(User value, JsonGenerator jgen, SerializerProvider provider)   
      throws IOException, JsonProcessingException {  
        jgen.writeStartObject();  
        jgen.writeStringField("user-name", value.getName());  
        jgen.writeEndObject();  
    }  
}  
	
public class UserDeserializer extends JsonDeserializer<User> {  
	   
    @Override  
    public User deserialize(JsonParser jp, DeserializationContext ctxt)   
      throws IOException, JsonProcessingException {  
        JsonNode node = jp.getCodec().readTree(jp);  
        String name = node.get("user-name").asText(); 
        User user = new User();
        user.setName(name);
        return user;
    }  
}  
	
	
}
